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QCD Evolution of the Spin Structure Functions of the Neutron and Proton

A. Schreiber
A. Thomas
J. Londergan
Journal / Anthology

Physical Review D
Year: 1990
Volume: 42
Issue: 7
Page range: 2226-2236

Models of the long-distance behavior of QCD can be used to make predictions for the twist-two piece of the current correlation function appearing in deep-inelastic scattering. The connection between the model predictions, valid at a four-momentum transfer squared Q2 of the order of 1 (GeV/c)2, and the data, collected at much higher Q2, is provided by perturbative QCD. We present here the details of a method, previously used for spin-averaged lepton scattering, applied to the spin-dependent case. We then use the method to make predictions for the spin structure functions gproton1 and gneutron1.

*Science > Physics > Nuclear and Particle Physics
*Science > Physics > Quantum Physics